Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2009 Mazda 6 V6-3.7LFACTORY OEM SERVICE PROCEDURE
Transmitter Battery Replacement [Keyless Entry System]
TRANSMITTER BATTERY REPLACEMENT [KEYLESS ENTRY SYSTEM]
1. Insert a flathead screwdriver into the transmitter notch and remove the key from the transmitter by pressing the tab.
2. Insert a flathead screwdriver into the transmitter notch and open the transmitter.
3. Press the hook in the direction of the arrow and remove the battery using the flathead screwdriver.
4. Install the new battery (CR1620) with the positive (+) pole facing up.
5. Align the upper and lower covers and close the transmitter.
Battery type
- Lithium battery CR1620
Battery life
- Approx. 2 years (when used approx. 10 times/day)
6. Install the key to the transmitter.
CAUTION:
- When attaching the key to the transmitter, squeeze them together until a click sound is heard.
- If the key is not securely attached it will separate from the transmitter.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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